[2] The Governors of the Erasmus Smith School bought Belgrave Square from Mr John Holmes.

It was used for 70 years as a sports ground for tennis, cricket, and rugby games by the students of the High School, Harcourt Street.

[3] In 1942, during World War II, the High School made Belgrave Square available to use an assembly center if it were necessary to put the government evacuation plan into action.

Fortunately, evacuation was not necessary, although a water storage tank was constructed on the square by the Department of Defence.

The Sergeant's Pavilion was planned in 1952 to include dressing rooms, a kitchen, and a caretaker's residence.